The discriminant of this equation is 49. The solutions for this equation are x=2 and x=-

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Answer:

Step-by-step explanation:
Required
Write an equation to present her daily earnings?
Let daily sales be represented by x and daily earnings be represented by y.
y is calculated as thus;


Convert percentage to decimal


Hence, her daily earnings is 
Answer:
B is incorrect because you could set them equal to each other
Answer: b, c, e
Step-by-step explanation: